I see that Mozilla is releasing a new version of the browser, FireFox Quantum. Has anyone been testing it, or already migrated? I have a browser open most of the time on these computers (email, ADV, news, sheep videos), and am happy with the interface tweaks I've made, bookmarks sync'd across devices, password management, ads blocked and scripts stopped, etc. I loathe having everything wiped away... Thus my question: Is it safe?